BSP Female Stainless Steel Pipe Fitting — 3/4/5-Way Adapter, 1/4" to 2"

BSP sizes refer to the nominal bore of the pipe, not the actual thread outer diameter. For example, a 1/2" BSP fitting typically has a thread OD of about 20.9 mm (≈0.82"). Measure the thread OD of your existing pipe or fitting and match it to a BSP nominal size chart. When in doubt, go one size up to avoid under-sizing your flow capacity.

Pressure ratings vary by port size and wall thickness. Stainless steel 304 BSP fittings generally handle working pressures in the range of 150–1000 PSI depending on the configuration. Smaller sizes (1/4"–1/2") typically support higher pressures than larger sizes (1-1/2"–2"). Contact us to confirm the rating for your specific application.

Yes. Stainless steel 304 offers good corrosion resistance in most outdoor and wet environments, performing well against rain, humidity, and mild chemical exposure. For highly corrosive environments — such as saltwater or high-chloride systems — stainless steel 316 is generally recommended instead.

No. BSP (British Standard Pipe) and NPT (National Pipe Taper) threads are not directly interchangeable. BSP uses a 55° thread angle while NPT uses 60°. Mixing them will typically result in leaks or cross-threading. Always confirm the thread standard of your existing system before ordering.

A 3-way fitting (tee) has three ports and splits or combines flow in a T-shape. A 4-way fitting (cross) has four ports at 90° intervals for flow in four directions. A 5-way fitting adds a fifth port, commonly used in manifold or distribution setups where multiple branch lines are needed from a single junction point.

BSPP (parallel) threads generally require a sealant — such as PTFE tape or thread compound — to achieve a leak-free seal, as the seal is made at the face rather than the taper. We recommend applying PTFE tape to all connections for reliable, leak-free performance regardless of thread type.

Stainless steel 304 BSP fittings are generally compatible with water, air, oil, mild chemicals, and many food-adjacent fluids. They are not recommended for strong acids, high-concentration chlorides, or highly alkaline solutions. Always verify chemical compatibility with your specific fluid before installation.